Transformer helix winding production

Patent metadata

Field	Value
Publication number	US-11935693-B2
Application number	US-202318119979-A
Country	US
Kind code	B2
Filing date	Mar 10, 2023
Priority date	Sep 15, 2020
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

Methods and apparatus for producing helix windings used for a transformer are provided. For example, apparatus comprise an electrically conductive mandrel comprising an elongated body, a head comprising an eyelet detail, and a winding structure disposed along the elongated body.

First claim

What is claimed is:

1. A system for producing helix windings used for a transformer, comprising:
a power supply;
a container holding an electrolyte solution;
an anode connected to a positive terminal of the power supply, disposed in the container, and surrounded by the electrolyte solution; and
an electrically conductive mandrel comprising:
an elongated body;
a head comprising an eyelet detail connected to a negative terminal of the power supply; and
a winding structure disposed along the elongated body,

wherein the elongated body, the head, and a portion of the winding structure that is not to be electroplated are covered in an insulating material, and
wherein the eyelet detail is not covered in the insulating material.

2. The system of claim 1 , wherein the insulating material is an epoxy paint.

3. The system of claim 1 , wherein the portion of the winding structure that is to be electroplated comprises a top surface and a bottom surface of the winding structure.

4. The system of claim 1 , wherein the electrically conductive mandrel is formed from titanium.

5. The system of claim 1 , wherein the winding structure comprises two three-turn winding structures and a six-turn winding structure.

6. The system of claim 1 , wherein the winding structure comprises a top surface and a bottom surface configured to be electroplated when the electrically conductive mandrel is disposed in the electrolyte solution for electro-deposition of high-purity copper.

7. The system of claim 1 , wherein the electrolyte solution comprises at least one of copper sulfate, copper cyanide, of copper acetate.

8. The system of claim 1 , further comprising a removal device that is configured to remove copper that has been electroplated to the winding structure.

Assignees

• Enphase Energy Inc

Inventors

• Harrison Michael J

Classifications

• H01F41/098 Primary

  Mandrels; Formers · CPC title

• C25D1/003

  3D structures, e.g. superposed patterned layers · CPC title

• C25D3/40

  from cyanide baths {, e.g. with Cu+} · CPC title

• C25D7/0614

  Strips or foils · CPC title

• C25D17/00

  Constructional parts, or assemblies thereof, of cells for electrolytic coating · CPC title